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Open Source Amazon Lex Alternatives

The best open source alternative to Amazon Lex is Botpress. It's not free, so if you're looking for a free alternative, you could try Hubot or rasa NLU. If that doesn't suit you, our users have ranked more than 10 alternatives to Amazon Lex and five of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Amazon Lex are ChaosBot and TeeDee.

This page was last updated Aug 10, 2021
  • Online

Amazon Lex is a service for building conversational interfaces into any application using voice and text. Powered by Alexa,...

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  1. Botpress icon


    • Free PersonalOpen Source
    • Self-Hosted

    Botpress is an open-source conversational AI platform with a comprehensive set of functionalities for FAQ & task automation. It's lightweight and have zero external dependencies allowing you to deploy it anywhere.

  2. Hubot icon


    • FreeOpen Source
    • Online

    Hubot is a framework to build chat bots, modeled after GitHub's Campfire bot of the same name, hubot.


  3. rasa NLU icon

    rasa NLU

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Python

    rasa NLU is a tool for intent classification and entity extraction. You can think of rasa NLU as a set of high level APIs for building your own language parser using existing NLP and ML libraries.

    No screenshots yet
  4. ChaosBot icon


    • FreeOpen Source
    • Self-Hosted

    ChaosBot is a social coding experiment to see what happens when the absolute direction of a software project is turned over to the open source community.


    It's discontinued. Just read the github repo or try to see the website.

    No screenshots yet
  5. Features - Get the best price, Create in three clicks, All round assistance for all, Upgrade your business, Real time customization.

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